Reversing mechanism for calculating-machines.



' R. REIN.

RBVERSING MECHANISM FOR GALGULATING MACHINES.

APPLIOATION FILED Nov 11, 1909.

957,095. Patented May 3, 1910.

UNITED STATES PATENT QFEICE.

ROBERT REIN, OF BERLIN, GERMANY.

Specification of Letters atent.

Patented May 3, QG.

Application filed November 1l, 1909. Serial No. 527,5l1.

To all whom it may concern.'

Be it known that T, Roemer Rampa subject of the German Emperor, and residing at. 19 luttkamerstrasse, Berlin, Germany, have invented certain new and useful Tmprovements in the Reversing Mechanism of Calculating-Machines, of which the following' is a specification.

ln applicants Unitedl States Patent 934,756 a reversing mechanism for Thomas calculating machines with two counting` mechanisms is described, in which special shafts for the reverse motion wheels are arranged below the reversing bars, which are turned by the reversingl lever through the medium of intermediate elements. Apart from the complication of this arrangement, the latter has the disadvantage that, especially in the case of machines with large numbers of cipher places, entailing,r a great length of reversing' bar and the arrangement of the shaft below the same, the said shaft is moved unsymmetriailly and disuniformly in consequence of the oncsided action of the reversing' lever. The present improvements in the reversing mechanism are designed to remove these disadvantages and at the same time to provide a much more simplifiedconstruction.

In thc improved reversing' mechanism, the reversing bar, instead of being displaced by means of a shaft arranged below the same and turned by means of the reversing lever, is now directly actuated by means of the reversing lever. For this purpose peculiarly shaped slots are arranged iu the reversing bar, by means of which thelatter slides along fixed pins let into bosses on the frame, and the reversing` lever rod engages by means of a pin attached to the same in a specially formed slot. near the end of the reversing' bar. When the reversing lever is pushed in the one or the other direction, the reversing bar makes a double movement, namely a lateral movement to the left or right. which has no effect' on the reverse motion Wheels, and a forward and rearward movement, by means of which the displacement of the reverse motion wheels on the countingmechanism spindles and therefore the reversal is effected. The slots in the reversing bar are so shaped that in the end positions of the reversing lever and therefore of the reversing bar, no displacements of the latter, either sidevvise, forward or rearward are possible, so that the reverse Emotion wheels are fixed in their working positions with absolute certainty. The slots l of the reversing bar, into which engage the pins screwed fast into the frame bosses, are uniformly distributed over the whole length i of the same, so that the displacement and therefore the reversal takes place uniformly over the whole length of the same and with certainty, notwithstending the one-sided actuation of the bar by means of the reversing lever.

The invention is illustrated by way of example in the accompanying7 drawings, in which, i

Figure l is a plan of the improved meehanism taken immediately above the reversing bar, and Eig. 2 a side elevation ,thereof looking in the direction the arrow o in Fig. l.

The reversing,` bar l projects in the usual manner between the toothed wheels 2 and 3 on theI hubs t of the reverse motion wheels, in such a manner that the latter must share the rotation of the counting mechanism spind..` The reversing; bar l can therefore be f'eely displaced in the direction of the arrow o or in the reverse direction, while when it is displaced in the perpendicular direction according to the arrow 7, the reverse motion wheels 4 are also axially moved on the counting` mechanism spindles 5. This displacement of the reversing bar l is effected by means of the reversing rod 8 in the following` manner: in the reversing bar l, are arranged a number of peculiarly shaped slots 9 into which permanently en- `rage pins ll rigidly i'ixed into the bearing bosses l0 for the reversingbar. These slots consist of two portions 12 and 13 running parallel to the longitudinal. edge of the reversing bar, and an oblique portion le connec-tingthem. Gn displacing the reversing ar to the right (Fig. l), the portions 13 of the slots 9 first slide along the pins lll until the latter reach the oblique portion lst of the slots. Tf it be attempted to move it farther, theY pins ll will slide along these oblique portions l-t of the slots 5l, the reversingI bar l being at the same time obliged to move rearward unt-il the pins ll reach the straight portions l2 of the slots i). So long as the pins l1 engage in the straight portions l2 or 13 of the slots 9, a forward or rearward displacement of the reversing bar is impossible'. The movement necessary for the reversal is derived from the re- Y "s :1121/ be. iiieieiiimged, nameiy, die ni 1y be pimidefl in the bosses :imi the the efei'sing bur.

- ving 110W def-scribed my inveniieu7 what Va` duim ii new ziiifl desire. i0 Secure by Leteifh' Patent is:

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j .eiippert im: Suid imi', 1i pin and :1u '(uiguififly j the leiizenni per disposed Slet 'mmed between (he reversing he siee` S). When iheie :Eefke eaiiipie in the pesieieii shown in bmi :u1/i its supper-i', im epeiaing rod eeml e ing bei 8 ig dgphiigwf in op: :ating wii'i 'iiie reversing bei', u pm and. l Lee arrow QCA Se to be Se' :i horizontally f iispeeed slet formed between.

ein i6 reveiwsiiig bur und die olieiziiiig red7 shift he iemtiffm of the level-sing TIL@ WheeiS e, ieveisii'iff bei? die` ,Used be- 9 s l ,u the ieversmg wheels, :md having Slots heir ends :wie si'ziigiit zuid it their l we, mis Biting in sind Slots, :in

i ,any ai piu miei, Slot formed beeeei'aiing bei* amd the reversing Y when the epeiiiiing bei' if; Lieiii'auxii eicifi'oi-Nfzrii meiou wiH Led e0 ihe levei'sing bei' 'to Shift i1 ef *die ing wheels simili sing i 'L es; iee iie i'evei e in e ieveisiii eehziiiism for :i Geleu- 255 'ieeis ziie miziiiy displaced en machine, iii binetien o :i piuepiiidiefs 5 ii e the eoriespemding p0.' ef reversing i is :iri'anged in een- Je paies veieiiig wheels and. Wih sieh;

"1rd eispiae mi if; Cem

' fifi etieight porreach 'iiie )Nique j 'i emile( ,ibilque poitieis, stm 9 and S i gg 5iie i eujfegmg iie'slots, sa ai rever@ i i me med wiih e 510 having i am?. un intermed.' 'e straigh o feel-:Ming imi-y zmei Yein eziteiid he eiieiu :md engaging the List men.-

vement xviii in'ipii'ed to the rein 'ew 2G eee :it 'this .i e only a ieee/irai dispizieemen' Severzqiig bei: l i

if eieiipeii i ziiies piace, in

a, reversing mechanism for :i ca ieu machine, the' :embiiifitiei'i of a plu 5mg wheels :zi-ranged 1u e011 eoneequeiee of which the pins 1l pues ie he sie@` i5 the end of "he portions; ee iiieie j' Secure (he i'eve' lemmi diep!:ieeiiieiie siete inv/ing eiid'sii'eigh iiieriiiediate oblique p0rf rod., ai

position, and iie ieverse motion be Sei for addition or subti-aeci The Obliquity of he siets and. the pix pei'ien wf e between the iengh of the ei;-

y :uis eaei'i ef sind i i i i 'aight per i i i i i pin and a slet formed between i revu ing md, sa d ieiei' siet ,having end. oblique podiums mi ii, sirziigii ineimeeiiete yemen, ii'iiereiy when the egei'ating rod is irisivei, the i'ex'eisiijig bei* wiif. be mOn/edl Y minis/vani 0.'.- feiwe'd :mii

lique pei-i, ons Aind that oit Une sb tiens muy be designed a., desire eeeui'e'iing fee zieeeser 'y zunimmt o' femwrd wfu'i diS iizieemeii and the leb mem; sieriine; te see-,Laie lie bei:

L ri

' he filets iie operating rod sind the' 1 5. In a calculating machine, the combination of a plurality of connected gears, a reversing bar fitting between the pluraliy of connected gears, an operating rod, means cooperating with the operating rod and the reversing bar for moving the latter foi-ward or rearward and laterally when said operaing bar is moved to shift the position of the reversing gears and lock the reversing bar in either of its extreme positions.

6. In a calculating machine, the combination of a series of connected pairs of re\'ersing gears, a reversing bar located between the series of pairs of reversing gears, an operating rod coperating with the reversing bar, means between the reversing bar and the operating rod to impart initial and final lateral movements to the .reversing bar when the operaing rod is moved, and means for in'iparting rearward or forward and further lateral movements to he said reversing bar between the initial and final movements of said bar, the forward or rearward movenient of the reversing bar shifting the reversing gears, and the initial and nal lateral movements of said bar unlocking and locking said bar. i

In testimony whereof l have signed my naine to this specification in the presence of two subscribing witnesses.

ROBERT REIN. Witnesses;

HENRY HASPER, emanan HAUPT. 

